CN108800120A - A kind of pulverized coal combustion system - Google Patents
A kind of pulverized coal combustion system Download PDFInfo
- Publication number
- CN108800120A CN108800120A CN201710295637.1A CN201710295637A CN108800120A CN 108800120 A CN108800120 A CN 108800120A CN 201710295637 A CN201710295637 A CN 201710295637A CN 108800120 A CN108800120 A CN 108800120A
- Authority
- CN
- China
- Prior art keywords
- coal
- air hose
- coal dust
- concentrated phase
- igniting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention provides a kind of pulverized coal combustion system, applied to newly-built or existing large coal powder boiler is transformed, including：One coal powder light-dark separation device, wherein concentrated phase wind coal mixtures are imported into igniting air hose；One igniting air hose, the axis along primary air piping arrange that diameter is less than the diameter of the primary air piping；One reflection unit is connected to the outlet of the igniting air hose, can invert the flow direction of the wind and coal dust intermixture that enter burner hearth by the igniting air hose；One cyclic annular refracting means, is arranged on the igniting air hose, can further collapse the flow direction of a part of coal dust after reverse directions to primary air piping axis direction；One flame generating device.The present invention can dramatically increase the distance that the coal dust of boiler flows back in flame, extend coal dust residence time in flame, coal dust is allow preferably to be preheated and be lighted, and improve pulverized coal ignition and combustion stability.
Description
Technical field
The present invention relates to large coal powder boiler starting ignitions and Steady Burning Technique of Low Load field, especially station boiler.
Background technology
What large coal powder boiler, especially station boiler used is all suspension combustion, and traditional sparking mode is using oil
Rifle heating furnace, make fire box temperature reach coal-fired matter ignition temperature, then put into coal dust firing again.Therefore it starts, is low
Load stable burning is required for consuming a large amount of fuel oil, and cost is high.
Nearly more than ten years gradually develop two kinds of novel ignition technologies：One is tiny-oil ignitions, it is that oil gun is mounted in coal dust
Burner internal utilizes a small amount of fuel oil firing coal-dust；Another kind is led to by plasma generator inside coal burner
Cross plasma torch firing coal-dust.
However both technologies the shortcomings that also having clearly：Although tiny-oil ignition rate of economizing gasoline reaches 80%~90%, but
Since radix is big, the considerable fuel oil of quantity consumed is still needed to；Although plasma ignition does not need fuel consumption, but system load,
Equipment investment is big, and power consumption is high, plasma anode and cathode short life, and parts price is high, only adapts to the coal of high volatile.
But tiny-oil ignition or Plasma Firing Technology no matter are used, coal dust is all to lean on oily flame in burner or wait
Ion torch is lighted, and is then just injected into burner hearth with flame, so coal dust residence time in flame is very short, it is difficult to quilt
It fully heats and burns.Therefore, large coal powder boiler in low- load conditions, since fire box temperature is relatively low, is unable to maintain that coal
The sustained combustion of powder, needs additional incendiary source surely to fire.
The technical solution that published patent CN 106352331 is announced before is：The First air separation of coal dust will be carried
At deep or light two-phase, concentrated phase First air is turned back by special reflection unit, is then interacted with light phase First air, is formed
Turbulent region, coal dust can stop longer time in turbulent region, to adequately be preheated and be lighted.
However there is also some limitations for this technology：For the common Terms of Corner Tangential Combustion of station boiler, adopt
DC burner require First air wind speed it is relatively high, and concentrated phase First air turn back after can spread at an angle,
Concentrated phase First air wind speed after diffusion reduces, power dissipation can be dispelled partly under the light phase First air effect of high speed, though
Stable turbulent region can so be formed and stablize flame, but still have further improved space.
And the situation that station boiler generally existing coal quality is poor at present, calorific value is relatively low, coal dust is lighted, after-flame is difficult, this
The turbulent region for just needing to form bigger, stable flame could be formed by so that coal dust is stopped the longer time in flame.
Invention content
The present invention provides a kind of pulverized coal combustion system, applied to newly-built or existing large coal powder boiler is transformed.
The smaller igniting air hose of a diameter is arranged in primary air piping, uses for an embodiment according to the present invention
The smaller point windburn pulverized coal conveying of air quantity need not heat excessive air when coal powder ignition initial stage, thus flame temperature compared with
Height, coal dust are higher by the rate of heating burning.Coal dust is set reversely to be transported in flame by the reflection unit at wind tube outlet of lighting a fire
Dynamic, positive acceleration of gradually slowing down under First air effect again spurts into burner hearth with flame, this process substantially prolongs coal dust and exists
The time heated in flame.
An embodiment according to the present invention installs a coal powder light-dark separation device in pulverized coal combustion system.?
When ignition of the boiler, First air and coal dust intermixture are sent out before entering burner hearth by the effect of the coal powder light-dark separation device
Raw concentrated phase, light phase separation；Concentrated phase wind coal mixtures enter the entrance of the igniting air hose, later in the effect of the reflection unit
Under turn back to flow back；Low-density wind coal mixtures flow outside the igniting air hose, meet with the concentrated phase wind coal mixtures of reflux, shape
At turbulent region；Coal dust in the turbulent region is lighted by flame generating device.
An embodiment according to the present invention, the cyclic annular refracting means of setting one on igniting air hose.When concentrated phase wind coal
When reflection unit of the mixture from igniting wind tube outlet ejects, the reflux spread at an angle, the ring can be formed
Shape refracting means can limit this diffusion, and part coal dust is further collapsed to primary air piping axis direction, dense to enhance
The penetrability of the reflux of phase wind coal mixtures increases the distance of reflux, extends residence time of the coal dust in flame, coal dust is made to obtain
To more fully preheating and lighting, to improve pulverized coal ignition and combustion stability.
An embodiment according to the present invention, ignition system include：One coal powder light-dark separation device, concentrated phase wind coal are mixed
It closes object and is imported into igniting air hose；One igniting air hose, the axis along primary air piping arrange that diameter is less than the primary air piping
Diameter；One reflection unit is connected to the outlet of the igniting air hose, can invert and enter burner hearth by the igniting air hose
The flow direction of wind and coal dust intermixture；One cyclic annular refracting means, setting is on igniting air hose, in the reflection unit and institute
It states and arranges between coal powder light-dark separation device, it can be by the flow direction of a part of coal dust after reverse directions towards primary air piping
Axis collapse；One flame generating device.
The present invention can dramatically increase the distance that the coal dust of boiler flows back in flame, extend what coal dust stopped in flame
Time allows coal dust preferably to be preheated and be lighted, and improves pulverized coal ignition and combustion stability.
Preferably, after ignition of the boiler, concentrated phase wind coal mixtures turn back to return under the action of passing through the reflection unit
Stream；Part concentrated phase wind coal mixtures in reflux course, under the action of cyclic annular refracting means, further to the axis of primary air piping
Line collapses, into pulverized coal flame, to be preheated, light.Therefore flow in flame is longer for concentrated phase wind coal mixtures, can be with
Adequately preheated；After being ignited, stable burning can also be realized.
Preferably, the cyclic annular refracting means are provided in the section of a pipe on igniting air hose, and internal diameter is with concentrated phase wind coal
The direction of the reflux of powder mixture is gradually reduced.Since the concentrated phase wind coal mixtures of reflux can be spread at an angle,
Wind coal mixtures power dissipation after diffusion, apart from short, preheating is not enough for reflux in First air flame.In the cyclic annular folding
Under the action of injection device, the diffusion of concentrated phase wind coal mixtures can be limited, and part coal dust is further to primary air piping axis
Direction collapse, to enhance concentrated phase wind coal mixtures reflux penetrability, increase the distance of reflux.
It should be pointed out that above-described ring-type refracting means are the embodiments of the present invention.Industry profession
Technical staff has been appreciated that many other cyclic annular refracting means and mode may be used, and is within the scope of the present invention.
Preferably, second cyclic annular refraction dress is arranged between the reflection unit and the coal powder light-dark separation device
It sets, to further increase reflux distance, enhances flame holding.
Preferably, the coal powder light-dark separation device is a cyclic annular bluff body, on the inner wall of primary air piping, with it is primary
The direction of the axis perpendicular of air hose is arranged.An embodiment according to the present invention, the ring-type bluff body is along primary air piping
Section is triangular in shape, and the igniting air hose arranged along primary air piping central axis is imported into convenient for concentrated phase wind coal mixtures, and light phase
Wind coal mixtures are flowed from the gap of igniting air hose and primary air piping.Experiment shows that this bluff body distribution mode can be very good
Realize air-coal separating：Coal powder density contained by low-density wind coal mixtures is very low, visually observes close to transparent.
Preferably, the coal powder light-dark separation device is a cyclone separator, and generated concentrated phase wind coal mixtures are led
Enter the igniting air hose.Embodiment according to the present invention, numerous, commercial cyclone separator can use, and adapt to tool
The requirement of body project.An embodiment according to the present invention, cyclone separator are arranged in apart from burner hearth remote position.
It should be pointed out that above-described light-dark separation device is the embodiment of the present invention；Industry profession
Technical staff has been appreciated that many other light-dark separation devices and mode may be used, and is within the scope of the present invention.
Preferably, the reflection unit is reflection cap, and the reflection cap and the igniting air hose outer wall form an annular
The mixture of gap, described windburn and coal dust leaves the igniting air hose by the annular gap.
It should be pointed out that above-described reflection cap is the embodiment of the present invention；Industry professional technique people
Member, which is appreciated that, has many other reflection units and mode may be used, and is within the scope of the present invention.
The present invention provides a kind of coal dust combustion method, applied to newly-built or existing large coal powder boiler is transformed.According to
The embodiment of the present invention, the coal dust combustion method include：
Before First air and coal dust intermixture enter burner hearth, by a coal powder light-dark separation device, by the First air and
Coal dust intermixture realizes concentrated phase, light phase separation；
The entrance of concentrated phase wind coal mixtures inlet point windburn pipe, later by turning back to flow back under the action of reflection unit；
Concentrated phase wind coal mixtures are in reflux course, and part concentrated phase wind coal mixtures are under the action of cyclic annular refracting means, into one
It walks and is collapsed to the axis of primary air piping；
Low-density wind coal mixtures flow outside the igniting air hose, meet with the concentrated phase wind coal mixtures of reflux, form turbulent region；
Coal dust in the turbulent region is lighted by flame generating device；
Wherein, the igniting air hose arranges that diameter is less than the diameter of the primary air piping along the axis of primary air piping；It is described anti-
Injection device is connected to the outlet of the igniting air hose, can invert wind and the coal dust mixing for entering burner hearth by the igniting air hose
The flow direction of object；The ring-type refracting means are arranged on the igniting air hose, are located at the reflection unit and the coal dust
Between light-dark separation device, the axis of the flow direction of a part of coal dust after reverse directions towards primary air piping can be received
Hold together.
Compared with the technology used in published patent application CN106352331, the present invention has the advantages that：
The present invention is by cyclic annular refracting means by the flow direction of a part of concentrated phase wind coal mixtures after reverse directions towards First air
The axis of pipe collapses, and partly avoids the concentrated phase wind coal mixtures after turning back from being generated with low-density wind coal mixtures and directly liquidates, to
The distance that coal dust flows back in flame is dramatically increased, extends coal dust residence time in flame, coal dust is allow to obtain more preferably
Preheating and light, improve pulverized coal ignition and combustion stability.
Compared to this patent, the prior art（Patent application CN 106352331）By the way of air-coal separating, by concentrated phase
First air coal mixtures are turned back by special reflection unit, directly liquidate to form turbulent region with light phase First air.Specially with this
Profit is compared, and is formed by that turbulent region is comparatively smaller, and coal dust residence time in turbulent region is shorter using the prior art,
It preheats and lights and be not enough, especially lower in coal dust calorific value, flame is not sufficiently stable, it is easier to it is existing that de- fire occur
As.
Description of the drawings
The technical characteristic of embodiment in order to better illustrate the present invention, different embodiments of the invention will be carried out in conjunction with attached drawing
It briefly describes.It is obvious that attached drawing is the exemplary of the present invention, without departing from the principle of the present invention, those skilled in the art can be with
Export additional attached drawing.
Fig. 1 is according to embodiments of the present invention, illustrates the sectional view of traditional station boiler.
Fig. 2 is according to embodiments of the present invention, illustrates the schematic diagram for installing the primary air piping of cyclic annular refracting means.
Fig. 3 is according to embodiments of the present invention, illustrates the schematic diagram of the primary air piping of the cyclic annular refracting means of installation two.
Fig. 4 is according to embodiments of the present invention, illustrates the schematic diagram of coal dust combustion method.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.
As shown in Figure 1, traditional station boiler uses First air powder feeding, primary air piping 5 more in the lower part of burner hearth and middle part
Layer arrangement, primary air piping 5 are connect by coal burner 1 with burner hearth, and coal burner is respectively disposed with secondary air channel 2 up and down,
Roof of the furnace is disposed with tertiary-air pipe 3, is disposed with torch oil gun in burner hearth bottom and intermediate secondary air channel 2, primary air piping 5 enters
Mouth end is connect with coal dust batcher 4.
Tiny-oil ignition and plasma ignition generally will be replaced with micro- oil from following several first layers or second layer coal burner 1
Burner or plasma burner, coal dust from warehouse by coal dust batcher 4 enter primary air piping 5, then in the burner by
Oily flame or plasma torch are lighted, and spray into burner hearth later.
As shown in Fig. 2, the ring-type refracting means are the pipes that one section of internal diameter gradually changes.Pulverized coal combustion system includes：
One igniting air hose 6, is inserted into the primary air piping 5 being connect with burner hearth wall, extends along the central axes of primary air piping 5, diameter
Less than the diameter of primary air piping 5；One cyclic annular bluff body 7, mutually hangs down on the inner wall of primary air piping 5, with the axis with primary air piping 5
Straight direction arrangement；One reflection unit 8, reflection unit 8 can be the trepannings of bluff body, elbow or special angle, be connected to a little
The outlet of windburn pipe 6 can invert the flow direction of the point windburn and coal dust intermixture that enter by air hose 6 of lighting a fire；One ring
Shape refracting means 10, setting are located on igniting air hose 6 between reflection unit 8 and cyclic annular bluff body 7；One flame generating device
9。
Cyclic annular bluff body 7 is triangular in shape along the section of primary air piping 5, is imported into along primary air piping convenient for concentrated phase wind coal mixtures
The igniting air hose 6 of 5 central axis arrangement, and low-density wind coal mixtures are flowed from igniting air hose 6 and the gap of primary air piping 5.It is real
It tests and shows that air-coal separating can be well realized in this bluff body distribution mode：Coal powder density contained by low-density wind coal mixtures is very
It is low, it visually observes close to transparent.Cyclic annular bluff body 7 is set up directly on primary air piping 5, is not necessarily to other wind powder separation equipment and coal
Powder storage facilities or the burner hearth powder-supply system for significantly changing existing pulverized-coal fired boiler simplify system setting, reduce equipment and throw
Money.
In another embodiment of the invention, the coal powder light-dark separation device is a cyclone separator, arrival end
It is connect with primary air piping, generated concentrated phase wind coal mixtures import the igniting air hose.Cyclone separator is arranged in apart from stove
Thorax remote position.Numerous, commercial cyclone separators can use, and adapt to the requirement of detailed programs.
It should be pointed out that above-described light-dark separation device is the embodiment of the present invention；Industry profession
Technical staff has been appreciated that many other light-dark separation devices and mode may be used, and is within the scope of the present invention.
Fig. 3 is according to embodiments of the present invention, illustrates the schematic diagram of the primary air piping of the cyclic annular refracting means of installation two.Such as figure
Shown in 3, second ring-type refracting means 10 of arrangement between reflection unit 8 and cyclic annular bluff body 7.
Cyclic annular refracting means 10 are provided in the section of a pipe on igniting air hose 6, and internal diameter is with concentrated phase wind coal dust intermixture
The direction of reflux be gradually reduced.The diffusion that this refracting means can be flowed back with operative constraint concentrated phase wind powder mixture, makes part
Coal dust further to primary air piping axis direction collapse, to enhance concentrated phase wind coal mixtures reflux penetrability, can be effective
Extend the distance that coal dust flows back in flame.
It should be pointed out that above-described annular refractive device is the embodiment of the present invention；Industry profession
Technical staff has been appreciated that many other devices and mode may be used, with allow reflux concentrated phase First air in coal dust to
Igniting air hose axis collapses, for the purpose of the reflux distance to increase coal dust, is within the scope of the present invention.
In another embodiment of the invention, reflection unit 8 can be reflection cap, reflection cap 8 and igniting 6 outer wall shape of air hose
At an annular gap, the mixture of described windburn and coal dust inputs the burner hearth by the annular gap.Reflection unit 8
Can also be other structures, as long as capableing of the flow direction of notable rollback point windburn and coal dust intermixture.Industry professional technique
Personnel have been appreciated that many other reflection units and mode may be used, and are within the scope of the present invention.
A kind of coal dust combustion method of offer of the present invention, applied to creating or existing large coal powder boiler being transformed, such as
Shown in Fig. 4, including：
Step 1, First air and coal dust mixing；
Step 2, before First air and coal dust intermixture enter burner hearth, by a coal powder light-dark separation device, by described one
Secondary wind and coal dust intermixture realize concentrated phase, light phase separation；
Step 3, the entrance of concentrated phase wind coal mixtures inlet point windburn pipe, later pass through reflection unit under the action of turn back to
Reflux；
Step 4, concentrated phase wind coal mixtures are in reflux course, effect of the part concentrated phase wind coal mixtures in cyclic annular refracting means
Under, further collapsed to the axis of primary air piping；
Step 5, low-density wind coal mixtures flow outside the igniting air hose, meet with the concentrated phase wind coal mixtures of reflux, are formed rapid
Flow region；
Step 6, the coal dust in the turbulent region are lighted by flame generating device；
Wherein, the igniting air hose arranges that diameter is less than the diameter of the primary air piping along the axis of primary air piping；It is described anti-
Injection device is connected to the outlet of the igniting air hose, can invert wind and the coal dust mixing for entering burner hearth by the igniting air hose
The flow direction of object；The ring-type refracting means are arranged on the igniting air hose, dense in the reflection unit and the coal dust
It arranges, the axis of the flow direction of a part of coal dust after reverse directions towards primary air piping can be received between light separator
Hold together.
In another embodiment of the invention, after ignition of the boiler, concentrated phase wind coal mixtures are by the reflection unit
It turns back to flow back under effect；Part concentrated phase wind coal mixtures in reflux course, under the action of cyclic annular refracting means, into one
It walks and is collapsed to the axis of primary air piping, into pulverized coal flame, to be preheated, light.Concentrated phase wind coal mixtures are therefore in flame
In flow it is longer, can adequately be preheated；After being ignited, stable burning can also be realized.
Compared with prior art, the present invention has the advantages that：The present invention is by cyclic annular refracting means by reversion side
It collapses, partly avoids dense after turning back to the flow direction of a part of concentrated phase wind coal mixtures later towards the axis of primary air piping
The generation of phase wind coal mixtures and low-density wind coal mixtures directly liquidates, the coal dust that can be dramatically increased flow back in flame away from
From extending coal dust residence time in flame, coal dust allow preferably to be preheated and be lighted, improve pulverized coal ignition and steady
Fire performance.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (8)
1. a kind of pulverized coal combustion system, applied to newly-built or existing large coal powder boiler is transformed, which is characterized in that including：
One coal powder light-dark separation device；
One igniting air hose, the axis along primary air piping arrange that diameter is less than the diameter of the primary air piping；
One reflection unit is connected to the outlet of the igniting air hose, can invert and enter burner hearth by the igniting air hose
The flow direction of wind and coal dust intermixture；
One flame generating device；
One cyclic annular refracting means, is arranged on the igniting air hose, dress is detached with the coal powder light-dark in the reflection unit
It arranges, the axis of the flow direction of a part of coal dust after reverse directions towards primary air piping can be collapsed between setting；
Wherein, in ignition of the boiler, First air and coal dust intermixture are detached by the coal powder light-dark and are filled before entering burner hearth
Concentrated phase, light phase separation occur for the effect set；Concentrated phase wind coal mixtures enter the entrance of the igniting air hose, pass through later described anti-
It turns back to flow back under the action of injection device；Concentrated phase wind coal mixtures are in reflux course, and part concentrated phase wind coal mixtures are in ring
Under the action of shape refracting means, further collapsed to the axis of primary air piping；Low-density wind coal mixtures are outside the igniting air hose
Flowing meets with the concentrated phase wind coal mixtures of reflux, forms turbulent region；Coal dust in the turbulent region is filled by flame
It sets and lights.
2. system according to claim 1, which is characterized in that after ignition of the boiler, described in concentrated phase wind coal mixtures process
It turns back to flow back under the action of reflection unit；Part concentrated phase wind coal mixtures in reflux course, in cyclic annular refracting means
It is collapsed under effect, further to the axis of primary air piping, into pulverized coal flame, to be preheated, light.
3. system according to claim 1, which is characterized in that the coal powder light-dark separation device is a cyclic annular bluff body,
On the inner wall of primary air piping, arranged with the direction of the axis perpendicular with primary air piping.
4. system according to claim 1, which is characterized in that the coal powder light-dark separation device is a cyclonic separation
Device, generated concentrated phase wind coal mixtures import the igniting air hose.
5. system according to claim 1, which is characterized in that the reflection unit is reflection cap, the reflection cap and institute
It states igniting air hose outer wall and forms an annular gap, the mixture of described windburn and coal dust leaves institute by the annular gap
State igniting air hose.
6. system according to claim 1, which is characterized in that in the reflection unit and the coal powder light-dark separation device
Between the cyclic annular refracting means of arrangement second.
7. system according to claim 1, which is characterized in that the ring-type refracting means are section of a pipes, pipe it is interior
Diameter is gradually reduced with the direction of the reflux of concentrated phase wind coal dust intermixture.
8. a kind of coal dust combustion method, applied to newly-built or existing large coal powder boiler is transformed, which is characterized in that including：
Before First air and coal dust intermixture enter burner hearth, by a coal powder light-dark separation device, by the First air and
Coal dust intermixture realizes concentrated phase, light phase separation；
The entrance of concentrated phase wind coal mixtures inlet point windburn pipe, later by turning back to flow back under the action of reflection unit；
Concentrated phase wind coal mixtures are in reflux course, and part concentrated phase wind coal mixtures are under the action of cyclic annular refracting means, into one
It walks and is collapsed to the axis of primary air piping；
Low-density wind coal mixtures flow outside the igniting air hose, meet with the concentrated phase wind coal mixtures of reflux, form turbulent region；
Coal dust in the turbulent region is lighted by flame generating device；
Wherein, the igniting air hose arranges that diameter is less than the diameter of the primary air piping along the axis of primary air piping；It is described anti-
Injection device is connected to the outlet of the igniting air hose, can invert wind and the coal dust mixing for entering burner hearth by the igniting air hose
The flow direction of object；The ring-type refracting means are arranged on the igniting air hose, dense in the reflection unit and the coal dust
It arranges, the axis of the flow direction of a part of coal dust after reverse directions towards primary air piping can be received between light separator
Hold together.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295637.1A CN108800120A (en) | 2017-04-28 | 2017-04-28 | A kind of pulverized coal combustion system |
| PCT/CN2017/099187 WO2018036566A1 (en) | 2016-08-25 | 2017-08-25 | System and method for burning pulverized coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295637.1A CN108800120A (en) | 2017-04-28 | 2017-04-28 | A kind of pulverized coal combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108800120A true CN108800120A (en) | 2018-11-13 |
Family
ID=64070672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710295637.1A Withdrawn CN108800120A (en) | 2016-08-25 | 2017-04-28 | A kind of pulverized coal combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108800120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595548A (en) * | 2018-12-04 | 2019-04-09 | 清华大学 | Deep or light back-mixing formula vortex burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201462825U (en) * | 2009-06-10 | 2010-05-12 | 煤炭科学研究总院 | pulverized coal burner |
| WO2016179822A1 (en) * | 2015-05-14 | 2016-11-17 | Zheng Shi | A system for burning pulverized solid fuel and a method thereof |
| CN106352331A (en) * | 2016-08-25 | 2017-01-25 | 施政 | Pulverized coal combustion system |
| CN106439801A (en) * | 2016-08-29 | 2017-02-22 | 煤科院节能技术有限公司 | Reversely-spraying bluff-body swirl pulverized coal burner |
-
2017
- 2017-04-28 CN CN201710295637.1A patent/CN108800120A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201462825U (en) * | 2009-06-10 | 2010-05-12 | 煤炭科学研究总院 | pulverized coal burner |
| WO2016179822A1 (en) * | 2015-05-14 | 2016-11-17 | Zheng Shi | A system for burning pulverized solid fuel and a method thereof |
| CN106352331A (en) * | 2016-08-25 | 2017-01-25 | 施政 | Pulverized coal combustion system |
| CN106439801A (en) * | 2016-08-29 | 2017-02-22 | 煤科院节能技术有限公司 | Reversely-spraying bluff-body swirl pulverized coal burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595548A (en) * | 2018-12-04 | 2019-04-09 | 清华大学 | Deep or light back-mixing formula vortex burner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102679338B (en) | Efficient coal dust combustor for reducing smoke NOx content | |
| CN201680364U (en) | Efficient low NOx pulverized coal burner for small and medium-sized industrial boilers | |
| CN100470128C (en) | Eddy flow powdered coal burner lit up by tiny oil | |
| CN101846315B (en) | Coal dust concentration device and coal dust burner with same | |
| CN203099814U (en) | Pulverized coal burner | |
| CN104819472B (en) | Biomass solid waste and hazardous waste combustion gas production system | |
| CN104832918A (en) | Novel cyclone bias pulverized coal burner | |
| CN101403497B (en) | Micro-oil ignition rotational flow breeze combustion device for preventing slag bonding of primary combustion chamber | |
| CN103017160B (en) | A kind of start-up burner of pure oxygen combustion-supporting | |
| CN108800108A (en) | A kind of pulverized coal combustion system | |
| CN106352331A (en) | Pulverized coal combustion system | |
| CN204629471U (en) | A kind of water-coal-slurry injection boiler eddy flow low-NOx combustor of top layout | |
| CN108800120A (en) | A kind of pulverized coal combustion system | |
| CN105698167A (en) | Swirl-flow burning device provided with external separation device | |
| CN208025504U (en) | A kind of coal burner | |
| CN101294705A (en) | Highly effective internal combustion type pulverized coal burner with ignition source | |
| RU2646164C1 (en) | Vortex dust-coil burner | |
| CN106224960A (en) | A kind of heat accumulation type radiant tube gradual combustor and combustion method thereof | |
| CN101603684B (en) | Trace oil igniting coal dust firing device for multiple oil guns | |
| CN206018610U (en) | A kind of oxygen-rich coal dust backflow premix burner | |
| CN108087871A (en) | A kind of coal burner | |
| CN106568079B (en) | System and method for providing combustion in a boiler | |
| US20150159862A1 (en) | Burner for combustion of heavy fuel oils | |
| CN205535781U (en) | Take external separator's swirl flow combustion device | |
| CN101806452B (en) | Micro oil content ignition coal powder burner capable of improving initial ignition heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181113 |